Pop star turned actor Justin Timberlake says Boo Boo the bear is "the good angel on Yogi Bear's shoulder," and the voice of reason for the cartoon favorite, about to hit the big screen. Timberlake provides the voice of Yogi Bear's little friend in the 3D movie, released this week and based on cartoon characters enjoyed by generations of children on television. "Back when I was in school, I'd procrastinate doing my homework by watching cartoons, and 'Yogi Bear' was one of the staples of after-school television and Saturday mornings," he said. "Boo Boo is definitely Yogi's conscience. He's the good angel on Yogi's shoulder, always there to remind him of what's important. But even as he's the voice of reason, he does it all while being a cute little bear with a nasal-y voice." Timberlake's movie career has included a voice role in the "Shrek" animated blockbusters as well as "The Open Road" and "Alpha Dog" -- and more recently he played Napster founder Sean Parker in Facebook movie "The Social Network." Dan Aykroyd, who voices Yogi, says the bear "was the most accessible -- the warmest and the happiest" of the cartoon characters he watched while growing up. "He was also a bit of an outlaw, which I liked. His friendship with Boo Boo was perfect, not a trace of meanness in either of them, and I think that's why kids of Justin's generation, and now, still embrace them," he said.